On 8 May 2012 20:01, Peter Eisentraut <pete...@gmx.net> wrote:
> On ons, 2012-01-18 at 14:55 -0500, Tom Lane wrote:
>> BTW, it strikes me that maybe the coding should work about like this:
>>
>> if (!TransactionIdIsValid(age_reference_xid))
>> {
>> age_reference_xid = GetTopTransactionIdIfAny();
>> if (!TransactionIdIsValid(age_reference_xid))
>> age_reference_xid = ReadNewTransactionId();
>> }
>> ... use age_reference_xid to compute result ...
>>
>> and of course code somewhere to reset age_reference_xid at end of xact.
>
> How about this patch?
I think we should fix this, but not with this exact patch.
We should just use MyPgXact->xid
rather than add more to the transaction path
I'll simplify the patch and commit.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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